cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A209555 Triangle of coefficients of polynomials u(n,x) jointly generated with A209556; see the Formula section.

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 2
6 1
7 2
8 5
9 3
10 1
11 3
12 6
13 9
14 4
15 1
16 3
17 11
18 13
19 14
20 5
21 1
22 4
23 12
24 28
25 24
26 20
27 6
28 1
29 4
30 19
31 34
32 59
33 40
34 27
35 7
36 1
37 5
38 20
39 62
40 80
41 110
42 62
43 35
44 8
45 1
46 5
47 29
48 70
49 164
50 166
51 188
52 91
53 44
54 9
55 1
56 6
57 30
58 115
59 200
60 376
61 314
62 301
63 128
64 54
65 10
66 1
67 6
68 41
69 125
70 365
71 496
72 776

List of values

[1, 1, 1, 2, 2, 1, 2, 5, 3, 1, 3, 6, 9, 4, 1, 3, 11, 13, 14, 5, 1, 4, 12, 28, 24, 20, 6, 1, 4, 19, 34, 59, 40, 27, 7, 1, 5, 20, 62, 80, 110, 62, 35, 8, 1, 5, 29, 70, 164, 166, 188, 91, 44, 9, 1, 6, 30, 115, 200, 376, 314, 301, 128, 54, 10, 1, 6, 41, 125, 365, 496, 776]